KrAtomic Number: 36 Atomic Mass: 83.798 amu Protons: 36 Electrons: 36 Most Common Isotope: Krypton-84 Neutrons in Krypton-84: 48 State of Matter (Room Temp.): Gas Boiling Point: -153.22°C Melting Point: -157.36°C Density: 0.003733 grams per cubic centimeters Abundance in Earth’s crust: 1.5 * 10^-8% Background:
Sir William Ramsay and Morris Traver discovered Krypton in1898 and named it after the Greek word "kryptos" meaning, "hidden". The 2 most common uses are: 1. Some fluorescent light bulbs are filled with a mix of krypton and argon gases 2. Combined with other gases to make luminous neon signs
Chemical Properties Element that Krypton Reacts with: Fluorine Compound: KrF2 (Difluoride)
For many years it was considered to be totally unreactive. Finally, in the late 60s Krypton was discovered to react with fluoride. When both elements are combined in an electrical-discharge tube at −183 °C KrF2 created. It is a colorless crystalline solid that is highly volatile and slowly decomposes at room temperature. No other molecular fluoride of krypton has been isolated. All krypton compounds are derived from KrF2. Krypton difluoride is a powerful oxidative fluorinating agent. So KrF2 is capable of oxidizing and fluorinating xenon to XeF6 and gold to AuF5.
Atomic Mass: 83.798 amu
Electrons: 36
Most Common Isotope: Krypton-84
Neutrons in Krypton-84: 48
State of Matter (Room Temp.): Gas
Boiling Point: -153.22°C
Melting Point: -157.36°C
Density: 0.003733 grams per cubic centimeters
Abundance in Earth’s crust: 1.5 * 10^-8%
Background:
Sir William Ramsay and Morris Traver discovered Krypton in1898 and named it after the Greek word "kryptos" meaning, "hidden".
The 2 most common uses are:
1. Some fluorescent light bulbs are filled with a mix of krypton and argon gases
2. Combined with other gases to make luminous neon signs
Chemical Properties
Element that Krypton Reacts with: Fluorine
Compound: KrF2 (Difluoride)
For many years it was considered to be totally unreactive. Finally, in the late 60s Krypton was discovered to react with fluoride. When both elements are combined in an electrical-discharge tube at −183 °C KrF2 created. It is a colorless crystalline solid that is highly volatile and slowly decomposes at room temperature. No other molecular fluoride of krypton has been isolated. All krypton compounds are derived from KrF2. Krypton difluoride is a powerful oxidative fluorinating agent. So KrF2 is capable of oxidizing and fluorinating xenon to XeF6 and gold to AuF5.